Electric power conversion systems – Current conversion – With means to introduce or eliminate frequency components
Patent
1997-09-26
1998-11-03
Wong, Peter S.
Electric power conversion systems
Current conversion
With means to introduce or eliminate frequency components
363 98, H02M 112
Patent
active
058318437
ABSTRACT:
A device for converting direct voltage into a three phase alternating voltage having a two level converter connected to a direct voltage network and to an alternating voltage network. A control apparatus for performing pulse width modulation determines the pulse width modulation pattern for each phase by comparing a triangular wave for each phase with a reference alternating voltage. The triangular wave is inverted an even number of times during a fundamental oscillation of the reference alternating voltage and the time position of the inversions of each triangular wave is always such that two triangular waves are half a period displaced with respect to the third.
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Lindberg, A., "PWM and Control of Two and Three Level High Power Voltage Source Converters, " Kungliga Tekniska Hogskolan, Stockholm, 1995.
Lindberg Anders
P.ang.lsson Rolf
Asea Brown Boveri AB
Han Y. J.
Wong Peter S.
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